Machine for trimming the linings of shoes.



E F OR TRIMMING THE LEMNGS OF SHOES.

APPHCATIGN HLED DEC. l5. 19H.

MACHIN Patented Aug. 3, 1915.

.STATES PATENT ()FFICE.

EAC'EINERY CGMPANY, 0F PATERSON,

NEW JERSEY.

NEW JERSEY, A COBIOBATION MACHINE B TBIMMING THE LININGS OF SHOES.

racemes.

Specification of Letters Patent.

Patented Aug. 3, 1915.

Application fled December 15, 1911. Serial No. 666,062.

To all whom it concern:

Be it known that I, KARL ENonL,'a citizen of the United States, residing at Arlington, in the county of Middlesex and State of Massachusetts, have invented certain Improvements in Machines for Trimming the Linings of Shoes, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to cutting machines and is herein illustrated as embodied in a machine for trimming the linings of stitchdown shoes.

. 1n the manufacture of stitch-down shoes toe out-turned margins of the upper and lining are-stitched to the insole,- the edge of the lining lying approximately flush with the edge of the upper; If now the outsole is attached, the edge of the lining will be exposed between the upper and the insole thereby giving the finished shoe an objectionable appearance which cannot be remedied by the edge setting operation. it 15 therefore desirable that the margin of the lining be trimmed off so that in the subsequent stitching operation, whereby the outsole is attached, the edge of the out-turned margin of the upper may be drawn into close contact with the outsole, and the edge of the out-turned lining be effectually concealed.

The general object of this invention. then, is to produce a machine capable of performing this and similar operations; and to this cud one feature of the invcution'consists in the provision in a machine for trimming the lining of a stitch down shoe of ale-utter and means for feeding the shoe forward with the margin of the lining which overlies the insole pressed against the cutter. In 0rd 21' to cut the lllllllf" cleanly in performing this trimming operation the edge of the cutter which severs the lining should be forced slightly into the underlying margin of the insole: but it is essential that the insole should not he out too deeply.

\ccordingl v, another feature of the present invention consists in the provision with a cutter and means for feeding to said cutter a piece of stock of means for controlling the depth of the cut produced. In the illustrative machine a pair of cotiperating rolls are provided for supporting and advancing the stock to a rotary cutter, and the depth of the cut is controlled by the adjustment of one of these rolls transversely of its axis whereby the extent to which the operative portion of the cutter projects be-.

yond the periphery of said roll may be determined. In order to aid in producing this clean out through the fabric which composes the lining it is desirable that the speed at which the edge of the cutter moves be greater than the surface speed of the means which feeds the stock.

Another feature of the invention, therefore, consists in the provision with a rotary cutter and a work support of a feed roll, and means for imparting to said feed roll a surface speed less than that of the edge of the cutter. In the illustrative machine, wherein the work support takes the form of a positively actuated roll, the feed roll is loosely mounted on the knife shaft and is driven from said supporting roll independently of said shaft. These and other features of the invention including certain details of construction and combinations of parts will be described in connection with an illustrative machine and pointed out in the appended claims.

Referring to the accompanying drawings :11 igure 1 is aside elevation of a machine in which the present invention is embodied; Fig. 2 is a perspective of a portion of the front of the machine; Fig. 3 is a perspective showing the position occupied by the work with respect to the machine; and Fig. 41 is a perspective showing the parts of the combined feed roll and gear, together with a portion of the slide in whichsaid roll and gear are mounted.

Mounted in bearings in the frame of the machine is a driving shaft 1 arranged to be rotated from any convenient source of power by means of a pulley 3 and having fast thereon a gear 5 which meshes with a gear 7 fast to a counter-shaft 9. This counter-shaft carries at its end a beveled gear 11 which meshes with a second beveled gear 13 upon an upright shaft 15, said shaft also carrying a worm 17 from which a work support 19, herein shown in the formof a. roll. is driven through a worm wheel 21 and a shaft 23 upon the end of which said roll is firmlyheld. Arranged substantially parallel to the shaft 23 is a shaft 25 having a iii gear 27 which meshes with a gear 29 fast to the driving shaft 1; A rotary cutter 31 is held upon the shaft 25 by a screw 33, said cutter having its edge extending slightly into a groove formed in the roll 19. l Vith the construction thus far described it will be evident that the knife is rotated faster than the work supporting roll that the rate of movement of the edge ofthe knife is considerably greater than that at which the stock is fed through the machine. By thus causing the stock to move slowly relativelyto the speed at which the knife is rotated a clean out is produced;

In order to insure proper feeding ofthe stock an upper feed roll 37 is caused to be rotated at a surface speed equal to that of the lower roll by the following mechanism: The roll 37 is provided with a bore 39 of greater diameter than that of the shaft 25 and with a rearwardly extending neck 41 having notches 43 to receive projections 45 formed on a gear 47, so that when said prorigidly to the frame of the machine by means of bolts 59 and serving with its arms to support the bearing blocks 53. The upper feed roll is thus held independently of the shaft 25 of the rotary cutter, and rotation of this roll is effected by a gear 61 which is rigid with the work supporting roll 1'9, the gears 47 and 61 being so proportioned that the surface speeds of the rolls 37 and 19 are equal. The slide 51 is extended at its lower end to form an edge gage 63, said gage being formed with a curved end so as to extend down between the gear 61 and'the roll 19, when desired.

order to permit separation of the rolls so as to facilitate the feeding of a piece of stock, the shaft is mounted in a sliding carriage 65, said carriage being normally held in, the position shown by a spring 67 and being arranged to be depressed when desired by a treadle-rod 69. In this movement the worm 21 will be rotated slightly, such rotation being permitted by the construction which has been described above,

since it will be evident that the gear 47 is always free to rot-ate. r

A stitch down shoe, as it appears before being operated upon, is shown in Fig; 3 in which the out-turned margin of the upper is indicated at 100, the out-turned margin of the lining at 102' and the edge of the insole at 104.

In the operation of the machine, the outturned margin of the upper is bent upwardly so as to be out of the way, and the insole and lining are thrust between the feed rolls with their edges in contact with the gage 63, it beingunderstood that the treadle has first been depressed to separate said rolls. The driving pulley 3 is rotated 0011- injury by the knife, a lifting finger or guard 71 is fastened by screws 73 to the slide 51. If it is desired to. vary the depth of the cut of the knife, the adjusting screw is rotated to raise or lower the slide 51 and with it the feed roll 37, it being evident that the depth of the cut of the knife depends upon the extent to which it projects beyond the lowermost point of th feed roll.

For convenience the invention has been described in connection with the trimming of the lining of a stitch-down s'hoe of a type in which the insole projects out to the edge:

of the outsole; but it should be understood that the invention is not limited to a ma chine for operating upon shoes in which the insole formsthe cutting bed or support for the material which is to be trimmed, since the outsole may perform this function equally well, nor to a machine by which the a lining only is trimmed since manifestly the outturned margin of the upper may alsobe trimmed, if desired.

Although the invention has been set forth in connection with a particular machine, it

should be understood that the invention isnot limited in the scope of its application to the particular machine shown and described.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is: 1. A machine for operating upon stitchdown shoes having, in combination, a cylinv drical feed roll adapted to contact with the under side of the margin of a sole of a stitch-down shoe, means for rotating said 1 roll to feed said sole, and a knife arranged to' operate from above to trim the lining progressively by cutting through said lining slightly into the upper face of said sole.

2. A machine for operating upon stitch down'shoes having, in combination, a cylindrical feed roll adapted to contact with the under side of the margin of a sole of a stitch-down shoe, means for rotating said roll to feed said sole, a knife arranged to operate from above to trim the lining pro gressively by cutting through said. lining slightly into the upper face of said sole, a spring for yieldingly supporting said feed roll, and means for depressing said roll in opposition to the force of said spring.

3. A. machine for trimming the lining of a stitch-down shoe having in combination, a cutter, means for feeding the shoe forward with the margin of the lining which overlies the insole pressed against the cutter, and a guard located in advance of the cutter for lifting out of the path of said cutter the margin of the upper of the shoe.

i. A machine for operating upon stitch down shoes having, in combination, a cylindrical feed roll adapted to contact with the under side of the margin of a sole of a stitclndou'n shoe, means for rotating said roll to feed said sole, a knife arranged to trim the lining progressively by cutting through said lining into said sole, and means for limiting the depth of said cut.

5. A machine of the class described having, in combination, a rotary cutter for operating upon stock, a stock supporting mem oer, a.feed roll for advancing the stock to the cutter, means for causing the supporting member to press the stock against the feed roll, and means for adjusting the feed roll to vary the depth of the cut produced.

6. A machine of the class described having, in combination, a rotary cutter for operating upon stock, a plurality of rolls for supporting and advancing said stock, means tor rotating said rolls, means for causing I the supporting roll to press the stock against the feed roll, and means for adjusting one of said rolls transversely of its axis of rotation to vary the depth to which the cutter enters the stock.

7. A machine of the class described having, in combination, a feed roll, a stock supporting roll, a shaft to which said stock supporting roll is fast, a cutter shaft about which said feed roll is loosely revoluble, a cutter fast to said cutter shaft, means for adjusting said teed roll transversely of said cutter shaft to vary the depth of the cut,-

' with it said feed roll to vary the depth t which the cutter enters the stock. A

9, A machine of the class described having, in combination, a cutter, a feed roll haw ing a gear attached thereto, a slide in which said combined roll and gear is rotatabl Y held, a shaft passing loosely through said I combined roll and gear, a support for the stock, means for adjusting said slide, and means for rotating said shaft and gear.

10. A machine ofthe class described having, in combination, a rotary shaft, a cutter .fast thereon, a feedroll revoluble about said shaft, a stock support, and means independent of said shaft for rotating said roll.

11. A machine of the class described having, in combination, two rotary shafts, a stool; supporting roll fast to one shaft, a cutter fast to the other shaft, a feed roll revoluble about-said cutter shaft, and means I connecting the rolls whereby the feed roll is driven from the stock supporting roll.

A machine of the class described hav ing, in combination, a rotary shaft, a cutter fast thereon, a feed roll through which said for rotating said roll independently of said shaft, and means for adjusting said roll with KARL ENGEL.

Witnesses: I I ELIZABETH C. COUPE, limrn C. Honanoon.

.shaft loosely passes, a stock support, means 

